There’s a traditional base called a Windmill Base (I think that’s the name), instructions for which shouldn’t be hard to find. You’re essentially making four connected preliminary folds and then folding the 8 flaps behind.

Check the diagram to make a windmill base at: https://www.origami-resource-center.com ... -base.htmlbut stop at step 7 and just squash the flap.After that you have to thin each one of the 4 flaps by folding the edge to the diagonal of the model and then hiding that part inside which in origami is called an inside recerse fold.

Brimstone wrote:After that you have to thin each one of the 4 flaps by folding the edge to the diagonal of the model and then hiding that part inside which in origami is called an inside recerse [reverse] fold.

It looks like it is made of simple mountain folds, and not reverse folds, as Baltorigamist said ("folding the 8 flaps behind").

Brimstone wrote:After that you have to thin each one of the 4 flaps by folding the edge to the diagonal of the model and then hiding that part inside which in origami is called an inside recerse [reverse] fold.

It looks like it is made of simple mountain folds, and not reverse folds, as Baltorigamist said ("folding the 8 flaps behind").

You're right. I did not understand the part about folding parts behind before but now it makes sense.